13 + 26 = 39
13 plus 13 would equal 26.
13 plus 13 is equal to 26
26
13+13=26 or2.7+20.3+5=26
26
39
It is 26 minus 13 = 13
7/13 + 11/26 = 325/338 which reduces to 25/26
9/26 + 3/13 = 195/338 which reduces to 15/26
-26
26/9
-x2 + 11x + 26 = -(x - 13)(x + 2) = (13 - x)(x + 2) = (x - 13)(-x - 2)